数学分数的简单计算PPT课件

小学数学第五册一、复习。口答下面各题。（1）里面有（）个。里面有（）个。（2）3个（）是。5个（）是。（3）（）个是。（）个是。（4）里有（）个（）。4个是（）。（5）1=====。916561954185739431717332448365451719231851836515熊妈妈买了一个大蛋糕，熊哥哥吃了这个蛋糕的，熊弟弟吃了蛋糕的。252515＋=35熊哥哥和熊弟弟一共吃了蛋糕的几分之几？２个加上１个是３个，就是151515３5小红我吃了这个西瓜的28小丽我吃了这个西瓜的18小红吃了西瓜的，小丽吃了西瓜的，他们一共吃了这个西瓜的几分之几？28182个加1个是3个，就是。181838182818+=28+138=1、小红吃了西瓜的，小丽吃了西瓜的的，他们一共吃了这个西瓜的几分之几?1828＋1656＋care.qm120.com/3c6b/4adq/10315.htmlcare.qm120.com/3c6b/4adq/10285.htmlcare.qm120.com/3c6b/4adq/10284.htmlcare.qm120.com/3c6b/4adq/10283.htmlcare.qm120.com/3c6b/4adq/10282.htmlcare.qm120.com/3c6b/4adq/10281.htmlcare.qm120.com/3c6b/4adq/10280.htmlcare.qm120.com/3c6b/4adq/10279.htmlcare.qm120.com/3c6b/4adq/10278.htmlcare.qm120.com/3c6b/4adq/10277.htmlcare.qm120.com/3c6b/4adq/10276.htmlcare.qm120.com/3c6b/4adq/10272.htmlcare.qm120.com/3c6b/4adq/10271.htmlcare.qm120.com/3c6b/4adq/10270.htmlcare.qm120.com/3c6b/4adq/10269.htmlcare.qm120.com/3c6b/4adq/10268.htmlcare.qm120.com/3c6b/4adq/10267.htmlcare.qm120.com/3c6b/4adq/10266.htmlcare.qm120.com/3c6b/4adq/10265.htmlcare.qm120.com/3c6b/4adq/10264.htmlcare.qm120.com/3c6b/4adq/10263.htmlcare.qm120.com/3c6b/4adq/9967.htmlcare.qm120.com/3c6b/4adq/9966.htmlcare.qm120.com/3c6b/4adq/9965.htmlcare.qm120.com/3c6b/4adq/9964.htmlcare.qm120.com/3c6b/4adq/9963.htmlcare.qm120.com/3c6b/4adq/9962.htmlcare.qm120.com/3c6b/4adq/9961.htmlcare.qm120.com/3c6b/4adq/9960.htmlcare.qm120.com/3c6b/4adq/9959.htmlcare.qm120.com/3c6b/4adq/9958.htmlcare.qm120.com/3c6b/4adq/9957.htmlcare.qm120.com/3c6b/4adq/9956.htmlcare.qm120.com/3c6b/4adq/9955.htmlcare.qm120.com/3c6b/4adq/9954.htmlcare.qm120.com/3c6b/4adq/9953.htmlcare.qm120.com/3c6b/4adq/9952.htmlcare.qm120.com/3c6b/4adq/9951.htmlcare.qm120.com/3c6b/4adq/9950.htmlcare.qm120.com/3c6b/4adq/9949.htmlcare.qm120.com/3c6b/4adq/9948.htmlcare.qm120.com/3c6b/4adq/9947.htmlcare.qm120.com/3c6b/4adq/9946.htmlcare.qm120.com/3c6b/4adq/9945.htmlcare.qm120.com/3c6b/4adq/9944.htmlcare.qm120.com/3c6b/4adq/9943.htmlcare.qm120.com/3c6b/4adq/9942.htmlcare.qm120.com/3c6b/4adq/9941.htmlcare.qm120.com/3c6b/4adq/9940.htmlcare.qm120.com/3c6b/4adq/9939.htmlcare.qm120.com/3c6b/4adq/9938.htmlcare.qm120.com/3c6b/4adq/9906.htmlcare.qm120.com/3c6b/4adq/9905.htmlcare.qm120.com/3c6b/4adq/9904.htmlcare.qm120.com/3c6b/4adq/9903.htmlcare.qm120.com/3c6b/4adq/9902.htmlcare.qm120.com/3c6b/4adq/9901.htmlcare.qm120.com/3c6b/4adq/9900.htmlcare.qm120.com/3c6b/4adq/9899.htmlcare.qm120.com/3c6b/4adq/9898.htmlcare.qm120.com/3c6b/4adq/9897.htmlcare.qm120.com/3c6b/4adq/9872.htmlcare.qm120.com/3c6b/4adq/9871.htmlcare.qm120.com/3c6b/4adq/9870.htmlcare.qm120.com/3c6b/4adq/9869.htmlcare.qm120.com/3c6b/4adq/9868.htmlcare.qm120.com/3c6b/4adq/9867.htmlcare.qm120.com/3c6b/4adq/9866.htmlcare.qm120.com/3c6b/4adq/9865.htmlcare.qm120.com/3c6b/4adq/9864.htmlcare.qm120.com/3c6b/4adq/9863.htmlcare.qm120.com/3c6b/4adq/9862.htmlcare.qm120.com/3c6b/4adq/9861.htmlcare.qm120.com/3c6b/4adq/9860.htmlcare.qm120.com/3c6b/4adq/9859.htmlcare.qm120.com/3c6b/4adq/9858.htmlcare.qm120.com/3c6b/4adq/9857.htmlcare.qm120.com/3c6b/4adq/9856.htmlcare.qm120.com/3c6b/4adq/9855.htmlcare.qm120.com/3c6b/4adq/9854.htmlcare.qm120.com/3c6b/4adq/9853.htmlcare.qm120.com/3c6b/4adq/8297.htmlcare.qm120.com/3c6b/4adq/8296.htmlcare.qm120.com/3c6b/4adq/8295.htmlcare.qm120.com/3c6b/4adq/8294.htmlcare.qm120.com/3c6b/4adq/8293.htmlcare.qm120.com/3c6b/4adq/8292.htmlcare.qm120.com/3c6b/4adq/8291.htmlcare.qm120.com/3c6b/4adq/8290.htmlcare.qm120.com/3c6b/4adq/8289.htmlcare.qm120.com/3c6b/4adq/8288.htmlcare.qm120.com/3c6b/4adq/8287.htmlcare.qm120.com/3c6b/4adq/8286.htmlcare.qm120.com/3c6b/4adq/8285.htmlcare.qm120.com/3c6b/4adq/8284.htmlcare.qm120.com/3c6b/4adq/8283.htmlcare.qm120.com/3c6b/4adq/8282.htmlcare.qm120.com/3c6b/4adq/8281.htmlcare.qm120.com/3c6b/4adq/8280.htmlcare.qm120.com/3c6b/4adq/8279.html＋1656＋＋1656＋＋1656＋=66=12515＋=351656＋=66=1仔细观察，你发现了什么？看谁算得又对又快。2737＋=574929＋=691535＋=452636＋=561838＋=481767＋=77=115熊妈妈买了一个大蛋糕，熊哥哥吃了这个蛋糕的，熊弟弟吃了蛋糕的。252515-=1515熊哥比熊弟多吃几分之几？366161616332515-=155626-=36仔细观察，你发现了什么？看谁算得又对又快。4737-=178969-=293828-=18710310-=41014-=1？6656-=1614-1=？1为什么可以看作？4414-1=4414-=34“1”还可以看作几分之几？100怎样计算分母相同的分数的加减法？计算同分母分数加（减）法，分母不变,分子相加或相减。15熊妈妈做了一个蛋糕，熊哥哥吃了这个蛋糕的，熊弟弟吃了蛋糕的。25还剩这个蛋糕的几分之几？书99310410+=7108929-=69１47-=372989？2、？4713、１、310410？5727-=+=491989=１-2858=+8989=-46=-１591904、计算：3778266、在（）里填上合适的数。（）+=（）—=—（）=（）+=1+=（）+（）=115117139134151315216727227832832201211111591610271232（）+（）=67考考你